As mentioned, functional blocks as presented are part of design/implementation, not architecture anymore. Did you generate some code out of this or just defined internal structure of an atomic functions and later coded it by hand? If I had to define internal structure, I’d prefer to generate the code instead of redoing textual implementation, which means we’re close to implement some open source Simulink equivalent 
The notation of functional blocks is also a little bit troubling to me as both FncBlocks, F1 and F2 are just normal functions, so they shall exist somewhere in a functional decomposition. Just F3 is some abstract code element, also ‘b’ constant can’t be modelled as it’s not a function:
And some details of allocated exchange items/elements can be specified on interface level.
Nevertheless, your last video is very interesting, just a use case is not so clear yet, e.g. what should be the relation between actions and functions?